90089980 has 48 divisors (see below), whose sum is σ = 193362624. Its totient is φ = 35251200.

The previous prime is 90089971. The next prime is 90090043. The reversal of 90089980 is 8998009.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207844 + ... + 208276.

It is an arithmetic number, because the mean of its divisors is an integer number (4028388).

Almost surely, 2^90089980 is an apocalyptic number.

It is an amenable number.

90089980 is an abundant number, since it is smaller than the sum of its proper divisors (103272644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90089980 is a wasteful number, since it uses less digits than its factorization.

90089980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646 (or 644 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 43.

The square root of 90089980 is about 9491.5741581679. The cubic root of 90089980 is about 448.2897718747.

The spelling of 90089980 in words is "ninety million, eighty-nine thousand, nine hundred eighty".